Dispensers and functional operation and timing control improvements for dispensers

ABSTRACT

A method of operating a dispensing unit including the steps of applying a power source to a dispensing unit that includes a container and performing a startup procedure in response to applying the power source. The startup procedure includes performing an activation sequence that discharges a fluid from the container. The method further includes the step of performing an active mode procedure after the startup procedure without providing a lockout period in between. The active mode procedure includes activating a motion sensor associated with the dispensing unit, performing an activation sequence that discharges the fluid from the container when the motion sensor detects motion, and performing a transition procedure.

CROSS REFERENCE TO RELATED APPLICATIONS

Not applicable

REFERENCE REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not applicable

SEQUENTIAL LISTING

Not applicable

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present disclosure relates to dispensers for discharging volatile materials from a container and methods for operating same.

2. Description of the Background of the Invention

Diffusion devices or dispensers are used to dispense volatile materials, such as perfumes, deodorizers, insecticides, insect repellants, and the like. Many such devices are passive diffusion devices that require only ambient air flow to dispense the volatile material, while other devices are active diffusion devices. Active diffusion devices are found in a variety of forms, some include fans and/or heaters to aid in the dispersal of volatile materials, others actuate a valve stem of an aerosol container to dispense a volatile material contained therein, still others utilize an ultrasonic transducer to break up a liquid volatile material into droplets that are ejected from the device, and yet others include any combination of the above or any other known type of active diffusion device. Various examples of such devices can be found in Helf et al. U.S. patent application Ser. No. 11/401,572, Beland et al. U.S. patent application Ser. No. 11/801,554, Helf et al. U.S. patent application Ser. No. 11/893,456, Helf et al. U.S. patent application Ser. No. 11/893,476, Helf et al. U.S. patent application Ser. No. 11/893,489, Helf et al. U.S. patent application Ser. No. 11/893,532, Sipinski et al. U.S. patent application Ser. No. 12/080,336, Sipinski et al. U.S. patent application Ser. No. 12/157,705, Pedrotti et al. U.S. Pat. No. 6,917,754, and Schwarz U.S. Pat. No. 7,540,473, all of which are incorporated herein by reference in their entireties. Further, some active diffusion devices include a sensor to detect motion or light in a space, wherein such devices dispense a volatile material in response to signals from the sensor.

Early diffusion devices that included sensors were developed to operate according to predefined operating methodologies for use in such places as restrooms to dispense perfumes or deodorizers to combat malodors. However, when a need arose for diffusion devices to be used in other environments, e.g., a living room, an office space, a factory floor, an outdoor area, etc., prior art devices that were developed for use in restrooms were found to lack the versatility necessary to be utilized in new environments. Consequently, a need has arisen for dispensers to provide an improved user experience and to enable a user to control the diffusion of a fragrance in different environments. The present disclosure relates to solutions to address such needs.

SUMMARY OF THE INVENTION

According to one embodiment, a method of operating a dispensing unit includes the steps of applying a power source to a dispensing unit that includes a container and performing a startup procedure in response to applying the power source. The startup procedure includes performing an activation sequence that discharges a fluid from the container. The method further includes the step of performing an active mode procedure after the startup procedure without providing a lockout period therebetween. The active mode procedure includes activating a motion sensor associated with the dispensing unit, performing an activation sequence that discharges the fluid from the container when the motion sensor detects motion, and performing a transition procedure.

According to another embodiment, a dispensing unit includes a housing adapted to receive a container and a power source and a motion sensor, an input device, and a controller associated with the housing. The controller is configured to perform a startup procedure in response to applying the power source to the controller. The startup procedure includes performing an activation sequence that discharges a fluid from the container. The controller is further configured to perform an active mode procedure after the startup procedure without providing a lockout period therebetween. The active mode procedure includes activating the motion sensor, performing an activation sequence that discharges the fluid from the container when the motion sensor detects motion, and performing a transition procedure.

According to a further embodiment, a method of operating a dispensing unit including the steps of applying a power source to a dispensing unit that includes a container and performing a startup procedure in response to applying the power source. The startup procedure includes providing a sleep period of about five seconds and performing an activation sequence that discharges a fluid from the container immediately after the sleep period has elapsed. The method further includes the step of performing an active mode procedure after the startup procedure. The active mode procedure includes activating a motion sensor associated with the dispensing unit, performing an activation sequence that discharges the fluid from the container when the motion sensor detects motion, and performing a transition procedure. The transition procedure includes providing a timeout period during which the motion sensor is deactivated, performing one or more automatic activation sequences during the timeout period, and performing a subsequent active mode procedure after the expiration of the timeout period.

Other aspects and advantages of the present invention will become apparent upon consideration of the following detailed description.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram of one embodiment of a dispenser;

FIG. 2 is an isometric view of a dispenser according to another embodiment;

FIG. 3 is a flowchart that illustrates programming that may be executed by the dispensers of FIGS. 1 and/or 2;

FIG. 4 is a flowchart that illustrates another embodiment of the programming of FIG. 3, including further details of a startup procedure;

FIG. 5 is a flowchart that illustrates programming that may be executed during an active mode procedure of the dispensers of FIGS. 1 and/or 2;

FIG. 6 is a flowchart that illustrates another embodiment of the active mode procedure of FIG. 5;

FIG. 7 is a flowchart that illustrates a further embodiment of the active mode procedure of FIG. 5; and

FIG. 8 is a flowchart that illustrates yet another embodiment of the active mode procedure of FIG. 5.

DETAILED DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a device 20 that includes a microprocessor 22, a power source 24, a motor 26, a sensor 28, one or more input devices 30 such as switches, dials, keypads, pushbuttons, etc., and a light source 32, e.g., a light emitting diode (“LED”). The power source 24 supplies power to the microprocessor 22 and to the other components, wherein the microprocessor 22 is further coupled to the other components and executes programming to control the operation thereof. In one embodiment, the microprocessor 22 may be an ATtiny13V based microcontroller, such as those manufactured by Atmel Corporation, of 2325 Orchard Parkway, San Jose, Calif. 95131. However, it is contemplated that any type of microcontroller known to those of skill in the art may be used with the present embodiments.

FIG. 2 illustrates an embodiment of the device 20 of FIG. 1 implemented as a dispenser 40 for dispensing the contents of an aerosol container 42. The dispenser 40 may be one of the devices described in Carpenter et al. U.S. patent application Ser. No. 11/725,402, which is incorporated herein by reference in its entirety. The dispenser 40 includes a housing 44 that is adapted to receive the aerosol container 42 and batteries 46. In addition, the dispenser 40 includes a selector switch 30 a, a pushbutton 30 b, and an actuator arm 52. The dispenser 40 also includes circuitry, the microprocessor 22, the motor 26, the LED 32, and the sensor 28, which are provided within the housing 44 and shown generally in FIG. 1.

The microprocessor 22 controls the motor 26 during a spray operation to actuate the actuator arm 52, which depresses a valve stem 54 of the aerosol container 42 to dispense the contents therefrom. The microprocessor 22 includes programming to initiate a spray operation in response to a signal generated by the switch 30 a, the pushbutton 30 b, a timer, or the sensor 28. The timer can be implemented in the microprocessor 22 or as a separate component. For example, in one embodiment, the microprocessor 22 includes programming to control the dispenser 40 in a timed automatic actuation mode, wherein the dispenser 40 performs spray operations at specified time intervals, e.g., every 30 minutes. Alternatively, or in conjunction with the previous embodiment, the microprocessor 22 is programmed to perform a spray operation in response to a signal from the sensor 28, the selector switch 30 a, and/or the pushbutton 30 b.

For purposes of illustration only, one particular embodiment of the operation of the dispenser 40 will be described with particularity. Turning again to FIG. 2, in the present embodiment the selector switch 30 a is used to turn the dispenser 40 on and off and to select between various operating modes, which may include a timed mode, a sensing mode, a combined timed and sensing mode, and other user selectable or pre-programmed functional modes and timing sequences. The LED 32 is energized continuously or is energized and de-energized to flash and indicate that the dispenser 40 is on and operating normally and/or to provide a warning that the dispenser 40 is about to perform a spray operation. The pushbutton 30 b is provided for manual actuation of the aerosol container 42, wherein the pushbutton 30 b may be depressed by a user to cause a spraying operation at any time, except when the dispenser 40 is off. The pushbutton 30 b allows the user to manually override the automatic actuation of the device 40. The sensor 28 in the present embodiment is a photocell light sensor, which may be used to detect motion. However, any other type of motion detector may be utilized, e.g., a passive infrared or pyroelectric motion sensor, an infrared reflective motion sensor, an ultrasonic motion sensor, or a radar or microwave radio motion sensor. Further, the sensor 28 can be replaced or used in combination with any other type of known sensor, e.g., a heat sensor or an odor sensor.

Referring to FIG. 3, the programming implemented by the microprocessor 22 to control the dispenser 40 initiates at a reset/start-up block 60 when the selector switch 30 a is toggled into an on position or, if the selector switch 30 a is not provided, when new batteries 46 are inserted into the device 40. After the block 60, control passes to block 62 and a startup procedure is performed, following which control passes directly to a block 64 without any lockout period therebetween and an active mode procedure is performed, as will be described in greater detail hereinafter.

FIG. 4 illustrates programming that provides further details according to one embodiment of the startup procedure 62, wherein control begins at a block 70 to provide an indication that the dispenser 40 is on, e.g., by energizing the LED 32. Next, control passes to a delay block 72 and control pauses for a predetermined period of time, e.g., about five seconds. Following the delay block 72, control passes to a block 74 and a warning or notice is issued that an activation sequence is imminent. In the present embodiment, the warning is a flashing or flickering of the LED 32, wherein the microprocessor 22 energizes and de-energizes the LED 32 two or more times within a short period of time, e.g., within three seconds. However, in other embodiments, the warning can be any combination of a visual, audible, tactile, olfactory, or any other warning that would be apparent to one of ordinary skill in the art. Following the block 74, the programming performs an activation sequence. In the present embodiment, the activation sequence is a spray operation that includes blocks 76, 78, and 80. More specifically, the spray operation begins at the block 76 where the motor 26 is energized to move the actuator arm 52 downwardly to depress the valve stem 54 of the aerosol container 42 into an open position. The motor 26 is deenergized in block 78. Thereafter, the motor 26 is energized to move the actuator arm 52 in the opposite direction in block 80 to assist the valve stem 54 in moving to a closed and non-depressed position. In one embodiment, the motor 26 is energized during the block 76 for about 1 second, the motor 26 is deenergized during the block 78 for about 150 milliseconds, and the motor 26 is energized during the block 80 for about 400 milliseconds. Modifications to the activation sequence of the present embodiment can include any sequence of the same or different steps, as would be apparent to one of ordinary skill in the art.

Referring again to the delay block 72, a relatively short delay of about five seconds or less is provided before the activation warning and the activation sequence are performed. In this embodiment, the short delay allows a user to quickly determine that the dispenser 40 is functioning properly, e.g., that all of the components are properly coupled together and functioning and that the contents of the container 42 are not depleted. Consequently, an improved user interaction with the dispenser 40 can be provided over other dispensers that require a user to wait for a longer period before being able to confirm the proper functioning of the dispenser.

FIG. 5 illustrates an embodiment of programming executed during the active mode procedure 64. At a block 90 the dispenser 40 turns on the LED 32 to provide an indication that the dispenser 40 is in the active mode. Thereafter, control passes to a decision block 92 and the programming activates the sensor 28 to determine if motion is detected. If motion is not detected, control passes back to the block 90 and subsequently proceeds again to the block 92. However, if motion is detected, control passes to a block 94 to perform an activation sequence, which may be the same or different from the activation sequence described above in relation to FIG. 4. After the activation sequence is performed, control passes to a block 96 to perform a user selectable or pre-programmed transition procedure before control loops back to the block 90.

FIGS. 6-8 provide details of various non-limiting embodiments of the transition procedure of the block 96 of FIG. 5. In FIG. 6, the transition procedure includes blocks 100 and 102, which provides for a lockout mode, wherein the sensor 28 is deactivated, e.g., by ignoring the output from the sensor and/or de-energizing the sensor, and the dispenser does not perform an activation sequence in response to the detection of motion. However, an activation sequence may still be performed if the pushbutton 30 b is depressed. The decision block 102 determines if the time elapsed during the lockout mode has reached a certain lockout period X. If the lockout period X has elapsed, then control passes back to the blocks 90-94 to determine if an activation sequence should be performed in response to motion. If the lockout period X has not elapsed, then control loops back to the lockout mode of the block 100. In one embodiment, a user can use an input device such as the switch 30 a to select the length of the lockout period X. For example, the user can select different lockout periods ranging from 5 min, 20 min, 30 min, 60 min, etc. for different sized rooms or user preferences. In a different embodiment, the lockout period may be a pre-programmed period.

In FIG. 7, the transition procedure includes blocks 110-116. More specifically, at a block 110 the control implements a lockout mode as described above. However, in the present embodiment, the control performs one or more automatic activation sequences during the lockout period. For example, the decision block 112 determines if the elapsed time during the lockout mode is equal to a time X and, if so, control passes to a block 114 to perform an activation sequence. After the block 114, control passes back to the block 110 and subsequently to the block 112. If the block 112 determines that the elapsed time is not equal to X, control passes to the block 116, which determines if the elapsed time is equal to Y, which in the present embodiment represents the total lockout period. If the elapsed time has not reached the total lockout period Y, then control passes back to the block 110, while if the lockout period Y has elapsed then control passes back to the block 90. In one embodiment, the user can use an input device such as the switch 30 a to select the length of the total lockout period, the number of automatic activation sequences during the lockout period, and the times at which the automatic activation sequence(s) are performed. In one example, the user selects a 30 min lockout period and a single automatic activation sequence at 15 min into the lockout period. In another example, the user selects a 60 min lockout period and a first automatic activation sequence at 20 min and a second automatic activation sequence at 40 min into the lockout period. In yet a further example, the user selects a 40 min lockout period and a single activation sequence at 10 min into the lockout period. In a different embodiment, one or more of the total lockout periods, the number of automatic activation sequences, and the times at which the automatic activation sequences are performed may be pre-programmed.

In FIG. 8, the transition procedure includes blocks 130-138. More specifically, at the block 92 if motion is not detected, then control passes back to the block 90, as discussed above. However, if motion is detected at the block 92, then control passes to a block 130, which determines how many times that motion has been detected and an activation or spray sequence performed. If motion has been detected and an activation sequence performed X times, then control passes to the block 132 and another activation sequence is performed before control passes to a lockout mode of the block 136 and the decision block 138. The decision block 138 determines if the lockout period has expired, as described above. Referring back to the block 130, if motion has not been detected and an activation sequence performed X times, then control passes to the block 132 and an activation sequence is performed before control passes back to the block 90. In the present embodiment, control does not execute a lockout mode until a second or subsequent motion detection/activation sequence is performed. The user can use an input device such as the switch 30 a to select the number of motion detection/activation sequences that are to be performed before entering the lockout mode. For example, the user can set the switch 30 a so that control executes the lockout mode only after a second, third, fourth, etc. motion detection/activation sequence is performed. In other embodiments, the number of motion detection/activation sequences that are to be performed before entering the lockout mode is preprogrammed.

In the embodiments described in relation to FIGS. 3-8, the programming performs the active mode after the startup procedure without any lockout period therebetween, which allows the user to execute the sensor based operation of the active mode without waiting for a lockout period to expire. Consequently, a user can confirm the proper operation of the sensor quickly upon startup of the dispenser. For example, after the startup procedure is performed, the user can immediately test the sensor by waving their hand in front of the sensor to trigger an activation sequence. Further, the user can immediately test the sensitivity of the sensor by waving their hand at different distances from the sensor and/or at different speeds/amplitudes. As a result, the user can quickly and conveniently determine a preferred placement of the dispenser in a room.

Various modifications can be made to the above embodiments without departing from the spirit of the present disclosure. For example, the user can use the switch 30 a to adjust the number of activation sequences that are performed each time motion is sensed, e.g., between one, two, or three activations each time motion is detected. According to another example, the user can use the switch 30 a to adjust a lockout period between the startup procedure and the active mode between zero and twenty minutes, for example. Further, other embodiments of the disclosure including all the possible different and various combinations of the individual features of each of the foregoing described embodiments are specifically included herein.

INDUSTRIAL APPLICABILITY

The dispenser described herein advantageously allows for the contents of a container to be sprayed into the atmosphere in a manner that can be adjusted by a user to accommodate different room conditions, environmental conditions, and personal preferences.

Numerous modifications to the present invention will be apparent to those skilled in the art in view of the foregoing description. Accordingly, this description is to be construed as illustrative only and is presented for the purpose of enabling those skilled in the art to make and use the invention and to teach the best mode of carrying out same. The exclusive rights to all modifications which come within the scope of the appended claims are reserved. 

I claim:
 1. A method of operating a dispensing unit, comprising the steps of: applying a power source to a dispensing unit that includes a container; performing a startup procedure in response to applying the power source, wherein the startup procedure includes performing an activation sequence that discharges a fluid from the container; performing an active mode procedure after the startup procedure without providing a lockout period therebetween, wherein the active mode procedure includes activating a motion sensor associated with the dispensing unit, performing an activation sequence that discharges the fluid from the container when the motion sensor detects motion, and performing a transition procedure.
 2. The method of claim 1, wherein the step of performing the transition procedure includes providing a lockout period during which the motion sensor is deactivated and performing a subsequent active mode procedure after the expiration of the lockout period, and wherein the length of the lockout period is selectable by a user.
 3. The method of claim 1, wherein the step of performing the transition procedure includes providing a timeout period during which the motion sensor is deactivated, performing one or more automatic activation sequences during the timeout period, and performing a subsequent active mode procedure after the expiration of the timeout period.
 4. The method of claim 3, wherein a user can select one or more of the length of the timeout period, the number of automatic activation sequences during the timeout period, and the timing of the one or more automatic activation sequences during the timeout period.
 5. The method of claim 1, wherein the step of performing the transition procedure includes performing subsequent activation sequences in response to the motion sensor detecting subsequent motion and providing a timeout period during which the motion sensor is deactivated only after performing one or more subsequent activation sequences.
 6. The method of claim 5, wherein a user can select the number of subsequent activation sequences to be performed before providing the timeout period.
 7. The method of claim 1, wherein the step of performing the transition procedure includes performing one or more activation sequences each time motion is sensed.
 8. The method of claim 7, wherein a user can select the number of activation sequences performed each time motion is sensed.
 9. The method of claim 1, wherein the step of performing the startup procedure further includes the steps of providing an indication that the dispensing unit is functioning properly, providing a sleep period that lasts about five seconds, providing an indication that the activation sequence is about to be performed, and performing the activation sequence.
 10. A method of operating a dispensing unit, comprising the steps of: applying a power source to a dispensing unit that includes a container; performing a startup procedure in response to applying the power source, wherein the startup procedure includes providing a sleep period of about five seconds and performing an activation sequence that discharges a fluid from the container immediately after the sleep period has elapsed; and performing an active mode procedure after the startup procedure, wherein the active mode procedure includes activating a motion sensor associated with the dispensing unit, performing an activation sequence that discharges the fluid from the container when the motion sensor detects motion, and performing a transition procedure, wherein the transition procedure includes providing a timeout period during which the motion sensor is deactivated, performing one or more automatic activation sequences during the timeout period, and performing a subsequent active mode procedure after the expiration of the timeout period.
 11. The method of claim 10, wherein the active mode procedure is performed after the startup procedure without a timeout period therebetween, and wherein the user can select one or more of the length of the timeout period, the number of automatic activation sequences during the timeout period, and the timing of the one or more automatic activation sequences during the timeout period. 